html,
body,
#app {
  width: 100%;
  height: 100%;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
li {
  list-style: none;
}
#app {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
a {
  text-decoration: none;
  color: black;
}
#app .main {
  flex: 1;
  overflow: auto;
}
img {
  max-width: 100%;
}
.link-button {
  font-size: 0.8rem;
  color: gray;
  display: block;
  margin: 8px;
  text-align: right;
  padding: 8px;
}
.navheader {
  height: 12vw;
  font-size: 2rem;
  color: #000;
  display: flex;
  line-height: 12vw;
}
.navheader span {
  font-weight: bold;
}
.title {
  flex: 1;
  text-align: center;
  font-size: 2rem;
}
